Re: [Xen-devel] [PATCH v4 08/34] vmap: Make the while loop less fishy.

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 15.03.16 at 18:56, <konrad.wilk@xxxxxxxxxx> wrote:
> It looks like it could underflow at first glance. That is
> if i is zero and you get in the while loop with the
> i--. However the postfix expression is evaluated after the
> conditional so the loop is fine and won't execute (with i==0).

I don't think this is the only place we do such, and with this
being well defined behavior I also don't see why we need to
change any of such uses.

(And btw., what does this have to do with the already large
xSplice series?)

Jan


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